Late Oyster
ExploreFungi
Late Oyster
sarcomyxa serotina
The Late Oyster (Sarcomyxa serotina), also known as the late fall oyster, is a hardy and distinctive gilled fungus that brings a splash of color to the quiet, cold forests of late autumn and winter. Unlike most mushrooms that vanish at the first sign of frost, this resilient species thrives in near-freezing temperatures, often fruiting when snow is on the ground. It plays a critical role in forest ecosystems as a decomposer, slowly breaking down dead deciduous wood and recycling nutrients back into the soil. While edible, its taste can vary from mild to quite bitter, making it more appreciated by experienced foragers and nature lovers who marvel at its ability to brave the winter chill.
Habitat: Found in deciduous and mixed forests, growing in overlapping shelves on decaying hardwood logs, stumps, and fallen branches.
Appearance
This mushroom features a kidney-shaped or fan-shaped cap, measuring 3 to 12 cm across, which is attached laterally to wood with little to no stem. The cap surface is smooth, slightly sticky when wet, and displays a beautiful palette of olive-green, yellowish-green, or brownish tones, often with a purple or violet tint near the margin when young. Below the cap, the closely spaced gills are pale yellow to orange-yellow, meeting a short, stout, yellowish stem that is covered in fine, velvety hairs.
KingdomFungiPhylumBasidiomycotaClassAgaricomycetesOrderAgaricalesFamilySarcomyxaceaeGenusSarcomyxa
Category
FungiRarity
Common
Danger
1/5 · Very low
Snaps
Be the first to snap!
Interesting facts
Its cap has a unique gelatinous layer underneath the skin that swells up when wet, helping the mushroom retain moisture during dry winter winds.
Unlike most mushrooms that decay quickly after a frost, the Late Oyster can survive multiple freezing cycles and continue to drop spores.
While considered edible, it contains a bitter substance that often requires long cooking or boiling to make palatable.
Special abilities
Ability
Antifreeze Adaptation
Features a specialized gelatinous layer beneath its cap skin that protects fungal cells from freezing, allowing it to fruit during winter.
Ability
Enzymatic Wood Decay
Secretes powerful extracellular enzymes like laccase to break down complex lignin and cellulose in dead wood, turning it into rich organic matter.
Ability
Spore Dispersal Resilience
Capable of releasing spores at temperatures close to freezing, ensuring reproductive success when competitor fungi are dormant.
Measurements & details
- Length
- 3-12 cm
- Weight
- 0.01-0.15 kg
- Lifespan
- 1-10 years
Diet & Feeding
As a saprotrophic fungus, it derives all of its nutrients by breaking down dead wood, particularly hardwoods like birch, alder, and maple.
Primary Foods
- Dead birch wood
- Dead alder wood
- Dead maple wood
- Lignin
- Cellulose
Ecological connections
host plant
Paper Birch
Betula papyrifera
Grows on and decomposes the dead logs and stumps of this tree species.
eaten by
Fungus Gnat
Mycetophila fungorum
The larvae of this fly feed on the fungal tissue of the mushroom cap.
Traits
No trait badges are assigned for this object yet.
Also known as
No aliases listed yet.
Collections
Collections for this object will appear here as more themes are added.
Safety
Danger
1/5 · Very low
No special safety notes yet.
Frequently Asked Questions
How to identify Late Oyster?
The easiest way to identify Late Oyster is to use the Snappit nature identifier app.
How long is Late Oyster?
3-12 cm
How much does Late Oyster weigh?
0.01-0.15 kg
How long does Late Oyster live?
1-10 years
What does Late Oyster eat?
As a saprotrophic fungus, it derives all of its nutrients by breaking down dead wood, particularly hardwoods like birch, alder, and maple.
Where is Late Oyster usually found?
Found in deciduous and mixed forests, growing in overlapping shelves on decaying hardwood logs, stumps, and fallen branches.
Snap Map
Zoom in to split clusters and explore where this object has been snapped.
Loading map…
Recent Snaps
Recent snaps will appear here as new observations are added.
